Pew Hispanic Center is a nonpartisan research organization that seeks to improve understanding of the U.S. Hispanic population and to chronicle Latinos' growing impact on the nation. The website has public datasets available for use and summary reports.
City-Data provides statistical demographic data on states and cities in the United States. Some examples include: geographical data, state profiles, crime data, registered sex offenders, cost of living, housing, and religions.
The National Center for Educational Statistics is the most comprehensive national website for statistical information on education related issues. Also has example of questionnaire items and other data tools to compute some basic statistics for various regions around the country.
Gallup Daily News reports empirical evidence to leaders and decision makers worldwide about how the world's 6 billion citizens think and behave. Website has excellent examples that can be used for class exercises or to increase use of statistics in everyday life.
Research Triangle International house a number of datasets, many dealing with childhood or adolescent health concerns. RTI is a hub for statistical analyses for various projects occurring across the globe.
The SPSS Education Resource Center website is a place “where you'll find exclusive tools to help your students master the analytical skills needed in today's workplace. From first-day-of-class slide presentations to comprehensive curriculum starter kits, you'll find the resources you need to teach statistics and data mining techniques using SPSS Inc. software.”
Global Terrorism Database is an excellent database for political scientists, global scholars, or anyone interested in researching terrorist acts. It has easy access to dataset online.